If you notice an error in your Word bibliography, DO NOT correct it directly in the document - this can disrupt the coding and corrupt your document.
Instead, follow these instructions:
You can customise the format and look of your Bibliography or Reference List.
Change the font, add a heading for your Bibliography or Reference List, change the line spacing, or change the hanging indent for your references. This option is found by clicking on the arrow to the right of Bibliography on the middle panel of the Word ribbon - click on Layout tab.
In numbered styles - the space between the Bibliography number and the Reference is determined by the tab settings in Word - adjust this to suit.
A bibliography can be divided into categories with groups of references listed beneath each category heading - e.g. Primary Sources and Secondary Sources. This is done in the Word document.
Click on Categorize References and select Configure Categories.